Synonyms to firm as Gibraltar

balanced, accordant, alike, all there, apoise, assured, automatic, clearheaded, clearminded, coequal, collected, commonsense, compos mentis, composed, concinnate, concinnous, confident, consistent, consonant, constant, continuous, cool, coolheaded, coordinate, correspondent, defensible, deserved, due, equable, equal, equanimous, equibalanced, equilateral, equilibrious, equiponderant, equiponderous, equitable, euphonic, euphonical, euphonious, eurythmic, even, evenhanded, fair, fair and square, fast, fiducial, finished, firm, fit, flat, flowing, fluent, good, harmonious, healthy-minded, homogeneous, immutable, imperturbable, in equilibrium, invariable, just, justifiable, justified, lawful, legal, level, levelheaded, logical, lucid, measured, mechanical, meet, meet and right, mentally sound, merited, methodic, monolithic, normal, of a piece, of sound mind, ordered, orderly, persistent, philosophical, poised, practical, pragmatic, predictable, proper, proportioned, rational, reasonable, recollected, regular, reliable, right, right and proper, rightful, robotlike, sane, sane-minded, secure, self-